Photoelectric induced elastomer deformation in PVK-TNF type γ-RUTICON

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Abstract
In the γ‐RUTICON images are created with a spatially sinusoidal deformation of a metallized elastomer which is deposited on top of a photoconductor. The deformation in the elastomer is controlled by the imagewise discharge of the photoconductor when a dc bias is applied between the top metal coating and the bottom transparent electrode. This dynamic process is described in terms of a double‐layer linear dielectric model. This model is strictly applicable only in the case where the photoconductivity σp is independent of the applied field. Such is the case in the steady state for PVK‐TNF (poly‐n‐vinylcarbazole‐trinitroflourenone) at applied fields ≤2 × 105 V/cm. The model predicts the response time τ of the elastomer to be dependent only upon σp and the dielectric constants εp and εe of the photoconductor and elastomer, respectively. The maximum deformation Dmax at a given applied bias V is a function of the mechanical properties of the metallized elastomer alone. If these parameters are field independent, Dmax is proportional to V2. Experiments confirm most of the theoretical predictions.

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